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Finding the Fourth Proportional to 138,304.80, 207,457.20 and 119,605.95

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Solution

The fourth proportional to 138,304.80, 207,457.20 and 119,605.95 is: 179,408.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,304.80 : 207,457.20 = 119,605.95 : x
  2. Step 2: Convert to fraction form
    138,304.80/207,457.20 = 119,605.95/x
  3. Step 3: Cross multiply
    138,304.80x = 207,457.20 × 119,605.95
  4. Step 4: Simplify right side
    138,304.80x = 24,813,115,490.34
  5. Step 5: Solve for x
    x = 24,813,115,490.34/138,304.80
  6. Step 6: Final answer
    x = 179,408.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.